
Unit Test - Chemical Reactions
Authored by JANET KLEINSCHMIDT
Science
8th Grade
NGSS covered

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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the three CHARGES in an atom?
Electric, charges, fields
Positive, negative, neutral
Proton, neutron, electron
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is in the center of an atom?
Molecules
Precipitate
Nucleus
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Carbon’s atomic number is 6. How many protons does it have?
6
12
3
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one is the best example of a mixture?
Cheese with holes
Salad with cucumbers
Ice
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A physical change . . . .
Does NOT result in a new substance.
Is baking a cake.
Results in a new substance.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A chemical change . . . .
Does NOT result in a new substance.
Is making ice.
Results in a new substance.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Label each change as a PHYSICAL or CHEMICAL change. Use a P or C. 11. _____ Butter melting
P
C
B
M
Tags
NGSS.MS-PS1-4
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